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Date: Wed, 14 Jan 2009 11:18:59 -0800 (PST)
From: "dhruba borthakur (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-5027) Block report processing should
 compare gneration stamp
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    [ https://issues.apache.org/jira/browse/HADOOP-5027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12663862#action_12663862 ] 

dhruba borthakur commented on HADOOP-5027:
------------------------------------------

A block-report processing should ignore blocks if it is the last block in an file that is under construction. 

> Block report processing should compare gneration stamp
> ------------------------------------------------------
>
>                 Key: HADOOP-5027
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5027
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>             Fix For: 0.19.1
>
>
> If a reported block has a different generation stamp then the one stored in the NameNode, the reported block will be considered as invalid.  This is incorrect since blocks with larger generation stamp are valid.

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